Sirius’s brother takes his name from a star in Leo. Regulus is the lion’s heart in the constellation, which is both fitting and odd given what we know about Regulus.

The bright star Regulus, the 'Little King,' reigns supreme in the March night sky. The star serves as the heart of Leo, the Lion constellation, in the eastern night sky. Here's how to see it.

Look west at sunset to find the razor-thin crescent moon hanging less than 10 degrees above the horizon. Regulus will appear ...

The mysterious R.A.B., who turns out to be Sirius Black's brother Regulus, plays a small but pivotal role in the Harry Potter franchise.

As evening progresses into night, the stars of spring begin to dominate in the eastern sky. Regulus, the brightest star in Leo, stands high in the east by 9 p.m.

Across Australia, on the evening of February 11/12, the Full Moon will travel directly in front of the bright star Regulus. For about an hour, the star will be hidden from view as the Moon passes ...

As the evening twilight deepens around 8:30 p.m. local time Tuesday night, check out the southeast sky. Weather permitting, a waxing gibbous moon will be shining bright, but it won't be alone.

Our April night sky showcases some of the most interesting stars that we see all year. This month features 11 stars that are first magnitude or brighter. In order of brightness are Sirius ...